JPS62757A - Airflow direction control type ventilating device - Google Patents

Abstract

PURPOSE:To permit to ventilate while deflecting the flow of air freely into wide range and diffusing the air into wide angle and range without increasing ventilating resistance by a method wherein a control plate, provided movably to any arbitrary position at the upstream side of a front stator blade, is driven. CONSTITUTION:The control plate 8, provided at the upstream side of the front stator blade 2 and capable of being moved into any direction and height by a driving device accommodated in the boss section 9 of the front stator blade, intercepts or releases a part of the flow of air, entered from a suction duct 4, thereby controlling bias flow generated at the downstream area of the device to control the blow-out direction and the deflecting angle of the airflow out of a blow-out port 5. When the control plate 8 stands vertically on the boss section 9 of front stator blade and opens the path of airflow, the airflow, entered from the suction duct 4, enters into the path after being regulated. The airflow, sent out by a rotary blade 1, is regulated again by the choking curved surface 6a of a casing 6 and a rear stator blade 3, whereby bias flow of axial direction is generated. The bias flow is collected at the downstream of the boss section 7 of the rear stator blade 3 and is blown out of the blow-out port 5 while forming axial blow-out stream.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air blowing device having a control device provided at an air outlet of an air conditioner or the like for arbitrarily deflecting the direction of air blowing.

Conventional technology In recent years, air conditioning equipment has come to serve both as a cooling and heating device.
It is desired to be able to freely control the temperature distribution in a room according to the user's wishes from the standpoint of both comfort and economy. In general, for comfort, the direction of the air blowing from air conditioning equipment is
It is better to uniformize the temperature distribution in the air-conditioned room by dispersing warm air downwards during heating and upwards during cooling.

In addition, like the zone heating and cooling system that has recently been requested by customers, it is not restricted by the installation location of the air conditioner, and it is possible to spot-condition only the area where people live in the living space, taking economic efficiency into account. The direction of the airflow is deflected over a wide range so that
Alternatively, it is preferable that the air conditioner is equipped with a ventilation circuit that can also perform concentrated ventilation.

To achieve this purpose, a blow control mechanism using a deflection plate has conventionally been used.

An example of the above-mentioned conventional wind direction control type blower device will be described below with reference to the drawings and FIG. 5.

In the figure, 10 and 11 are guide walls, 12 is a nozzle that blows out cold and hot air, and 13 is a deflection plate rotated by a shaft 14. Due to the deflection effect of the blowing air by this deflection plate 13,
The flow emerging from the nozzle 12 adheres to the guide wall 10.11 and is deflected. When the deflection plate 13 is rotated, the guide walls 10 and 11 to which the flow adheres rotate, and the direction of the blowing air changes.

The problem that the invention aims to solve is to deflect the flow by an operation that exceeds the problem to be solved by the present invention. Because of this, there is a high ventilation resistance, and since the deflection occurs at a position where the wind velocity is high, it has the disadvantage that a large deflection angle cannot be obtained. Moreover, if the angle of the deflection plate 14 is increased in an attempt to increase the deflection angle, the ventilation resistance increases and at the same time the deflection plate 14
A large turbulent area was generated downstream of the turbulence, causing turbulent noise.

The present invention has been made by focusing on such conventional problems, and allows the flow to be freely deflected over a wide range of vertical and horizontal directions according to the application without increasing ventilation resistance or disturbing the streamlines, thereby allowing the flow to be deflected in a concentrated manner. It is an object of the present invention to provide a flow direction control device that blows air in a spot or spreads the air evenly in a spherical shape over a wide angle and a wide range.

Means for Solving the Problems In order to achieve this object, the present invention includes a rotor blade having an axial flow or mixed flow fan shape, a casing containing the rotor blade, and a casing supported by the casing and the rotor blade having the shape of an axial flow or mixed flow fan. a front stator vane provided near the upstream side of the rotary blade; a rear stator vane supported by the casing and provided near the downstream side of the rotary blade; an air outlet provided with a flow guide wall having a gradually expanding shape; a control plate provided upstream of the front stator vane so as to be movable to any position; The control plate is fixed and is provided with an f-motion device that drives the control plate.

Function: With the above configuration, the present invention has a wind direction deflection device built into the blower casing, thereby reducing the size and weight of the entire blower circuit, and greatly deflecting and diffusing the air in any direction with low flow path resistance. As a result, we have realized a low-noise, direction-controlled blower that achieves wide-area air conditioning or spot air-conditioning of a living space, and also suppresses flow turbulence and generates little turbulence noise.

Embodiment Hereinafter, the configuration and operating principle of wind direction deflection of a wind direction control type blower showing one embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a sectional view showing the configuration of a wind direction control type blower showing one embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a rotor blade placed between a front stator blade 2 provided on the upstream side and a rear stator blade 3 provided on the downstream side, and the rotary blade 1 is fed from the suction duct 4. The air flow is blown to the air outlet 5 provided at the air outlet end of this air blower. A casing 6 has a smooth inner wall surface, is connected to the suction duct 4, and constitutes a main body by fixing the front stator vane 2, the rear stator vane 3, and the guide wall 5, respectively.
Can be installed on the ceiling or wall. Said casing 6
A large arc-shaped aperture curved surface 6a directed toward the central axis is provided on the downstream inner wall of the rotary blade 1, and the flow exiting the rotary blade 1 is rectified together with the rear stator vane 3 to create a bias flow directed toward the central axis. and is guided to the air outlet 5 provided on the downstream side.

The flow is once throttled at the outlet 5 and then blown out.

A guide wall 5a having a gradually expanding shape is provided on the downstream side of the air outlet 5. Reference numeral 7 designates a rear stator vane boss portion, which, together with the rear stator vane 3 and the casing 6, forms a flow path for rectifying the flow and directing it toward the central axis, and at the same time, a motor (not shown) that drives the rotary blade 1. Built-in.

Reference numeral 8 denotes a control plate that is provided on the upstream side of the front stator vane 2 and can be moved in any direction and height by a drive device (not shown) built in the front stator vane boss portion 9; The suction duct 4
By blocking or opening a portion of the flow that flows in, the bias flow generated in the downstream region is controlled, and the blowing direction and deflection angle of the flow flowing out of the blower outlet 5 are controlled.

The principle of operation of the wind direction control type blower device configured as described above will be explained with reference to FIGS. 2 to 4.

FIG. 2 is a sectional view of the wind direction control type blower device, and first, a case will be described in which the control plate 8 stands perpendicularly to the front stator vane boss portion 9 and the flow path is open.

In this state, the flow F flowing in from the suction duct 4
i is rectified and flows into the flow path constituted by the casing 6 and the front stator vane boss portion 9. The flow Fi sent out by the rotary blade 1 is rectified again by the throttle curved surface 6a of the casing 6 and the rear stator blade 3, and an axial center direction bias flow Fb is generated. This bias flow Fb is collected downstream of the boss portion 7 of the rear stator vane 3, and is blown out from the blow-off port 5 as an axial blow-off flow Fo.

Next, as shown in FIG. 3, a case will be described in which the control plate 8 is in contact with the left side of the upstream front surface of the front stationary vane 2.

In this state, the flow Fi flowing in from the suction duct 4 is blocked by the control plate 8 that has fallen to the left, and flows through the right side of the front stator vane 2. Therefore, the bias flow Fb in the axial center direction on the return path described above is caused by the aperture curved surface 6a of the rear stationary blade 3.
It occurs strongly on the right side.

As a result, the axial blowout flow Fo is pushed by the strong bias flow Fb generated from the right side and is pushed and bent toward the guide wall 5a of the blowout port 5.

As a result, the flow Fo coming out of the air outlet 5 interferes with the guide wall 5&, flows along the surface of the guide wall 5a due to the Coanda effect, and is largely deflected with almost no reduction in air volume. In this case, the maximum deflection angle can be arbitrarily set depending on the shape of the guide wall 5a.

Next, as shown in FIG. 4, a case will be described in which the control plate 8 is slightly separated from the front stationary vane 2 to provide a small gap d.

In this case, a flow Fil passing through this small gap d is generated. This flow Fil generates a small bias flow Fbl in the downstream region. Due to the action of this flow Fbl, the tilting force of the flow FO exiting from the blower outlet 5 is reduced.

As a result, the degree of adhesion to the guide wall 5a also decreases, and the deflection angle also becomes smaller compared to FIG. 3. And this gap d
When Fbl is gradually increased, the bias flow Fbl gradually becomes larger and the deflection angle becomes smaller.

Then, by increasing d further and raising the control plate 8 until it is perpendicular to the boss portion 9 of the front stationary vane 2, the second
As shown in the figure, the deflection angle eventually becomes zero, and the air is blown straight out from the air outlet 5.

That is, by tilting the control plate 8 at an arbitrary angle and setting an arbitrary gap d between the control plate 8 and the front stationary vane 2, the deflection angle of the flow can be arbitrarily set.

Moreover, since the control plate 8 can be arbitrarily rotated by 360° around the rotation axis, for example, by tilting the control plate 8 to the right, the blowout flow Fo can be tilted to the right.

This allows the present air blower to blow air in any direction and at any angle.

Effects of the Invention As described above, the present invention includes a rotor blade having an axial flow or mixed flow fan shape, a casing housing the rotor blade, and a front rotor blade supported by the casing and provided near the upstream side of the rotor blade. a rear stationary vane supported by the casing and provided near the downstream side of the rotary blade; and a flow guide wall provided downstream of the rear stationary vane and having a trumpet-shaped gradually expanding shape. a control plate provided on the upstream side of the front stationary vane so as to be movable to any position;
It is composed of a drive device that is fixed on the upstream side of the front stator vane and drives the control plate, and controls the flow exiting from the outlet.
By moving a control plate provided just before the front stationary vane, a rectified bias flow is forcibly generated, deflected in any direction at any deflection angle, and blown out. With this configuration, there is no damper etc. at the outlet, so
It is possible to prevent the occurrence of stagnation points in the flow, reduce flow path resistance near the outlet, and reduce the load on the motor.

Furthermore, even if the wind direction is greatly deflected, there is almost no decrease in the air volume, so the efficiency of the blower can be increased as a whole. Moreover, the effects of the rear stationary vanes and the casing throttle curve suppress flow turbulence, and the flow deflection characteristics and noise characteristics of the guide wall can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a wind direction control type blower according to an embodiment of the present invention, Figs. 2 to 4 are explanatory diagrams of the operating principle of blowing air in different directions of the same embodiment, and Fig. 5 is a conventional FIG. 3 is a sectional view of the wind direction control device of FIG. 1...Rotary blade, 2...Front stationary blade, 3.
...-Rear stator vane, 5...Blowout outlet, 5a...
...Guidance wall, 6...Casing, 8...
...control board. Name of agent: Patent attorney Toshio Nakao and one other person
--Rotor blade 2-11 front l Shizuka 1 Figure 2 S--Ichibukiguchi Riku-Guidance village 6-11 γ-Sing 8--1st control plate 7-m-Rotor blade Z-- -RL Seikan No. 31! f 3--Ichigo Shizuka l5--
- Blow melon mouth 5 α -

Claims (1)

[Claims] A rotor blade having an axial flow or mixed flow fan shape, a casing containing the rotor blade, and a front stator blade supported by the casing and provided near the upstream side of the rotor blade;
A blower including a trailing stationary vane supported by the casing and provided near the downstream side of the rotary blade, and a flow guide wall provided downstream of the trailing stationary vane and having a gradually expanding trumpet shape. A wind direction comprising an outlet, a control plate provided on the upstream side of the front stationary vane so as to be movable to any position, and a drive device fixed on the upstream side of the front stationary vane and driving the control plate. Controlled air blower.